Plowyoke and plow



2 Sheets-Sheet l W. B. UFFERT PLowYoKE AND PLow Filed March 13, 1924 Dec. 16

llllllv W.- B. UFFERT PLowYoKE AND PLow y Filed yroh Dec, 16, 1924.

2 Sheets-Sheet 2 Patented Dec. 16, 1924.

UNITED STATES WALTER B. UFFERT, OF ASTORIA, NEW YORK.

PLOWYOKE AND PLOW.

Application filed March 13, 1924. Serial No. 699,007.

To all whom t may oon-cem.'

Be it known that I, VVAL'rnn B. UFFERT, a citizen of the United States, residing at Astoria, Long Island, in the county of Queens and State of New York, have invented certain new and useful Improvements in Plowyokes and Flows; and l do hereby declare the following to be a full, clear, and exact description `of the invention, suoli as will enable others skilled in the art to which it appertains to make and use the same.

The present invention relates to electrically propelled carriers such as street cars, which derive current from a conductor located in an underground conduit and embodying a plow which operates in a. surface slot rail, and the purpose in view is to provide for a ready detachment of the plow from the car under abnormal conditions, such as shortcircuiting, binding or other trouble rendering the plow inactive.

Other objects and advantages will be apparent and suggest themselves as the nature of the invention is understood.

While the drawings illustrate an embodiment of the invention it is to be understood that in adapting the same to meet different conditions and requirements, various changes in the form, proportion and minor details of construction may be resorted to without departing from the spirit of the invention.

Referring to the accompanying drawings forming a part of the application:

Figure 1 is a detail veiw of a plow and mounting therefor, showing the parts in operative relation,

Figure 2 is a side view of the parts illustrated in Figure l, the plow shafts being yin section and an end portion of the yoke broken away,

Figure 3 is a top plan view of the drop yoke, the plow being omitted, and

Figure 4 is a sectional view on the line 4 4 of Figure 2.

Corresponding and like parts are referred to in the following description and designated in the several views of the drawings by like reference characters.

The numeral 1 designates an underground conduit in which are located the usual channel or conductor rails 2. rl`he slot rails 3 are of usual construction and arrangement and receive the shank 4 of the plow. The plow 5 is provided at opposite sides with the accustomed shoes 6 which coact with the channel or conductor rails 2 to receive current therefrom. The plow head comprises spaced side members 7 which are connected by rivets 8 or other preferred fastening "f withdrawn, the plow drops so as to clear the channel or conductor rails 2, as indicated by the dotted lines in Figure 1. The plow is supported in this position by means of the pins 11 which engages the yoke. The pins 11 and 12 are of similar construction and have an end portion flattened upon one side, thereby requiring rotation of the pins preliminary to withdrawing or placing thereof into position. The pins 12 are retained in place by a lock 13 which engages a notch 14 formed in a side thereof.

The drop yoke 15 is formed with an opening 16 in which the plow is adapted to move vertically, the inner walls having vertical channels 17 at opposite ends in which the members 7 are adapted to slide. Notches 1S are formed in the upper edges of the side walls of the drop yoke to receive the project-- ing ends of the pin 11 when the plow drops so as to hold the vsame in suspension. A sleeve 19 is secured to each end of the drop yoke 15 and is mounted upon a plow shaft 20 applied to the under structure of the car.

In the event of the plow becoming disabled from any cause, it may be released by withdrawing the pins 12, thereby permitting it to drop so as to clear the channel or conductor rails, the plow being suspended by means of the pin 11. The pins 12 are readily accessible and may be easily withdrawn to release the plow when required. Thus, the necessity for moving a stalled car to a grip hatch to release the plow is obviated, thereby saving time and the crippling of the entire or a port-ion of a car system propelled by electricity supplied by conductors located in an underground conduit.

That is claimed is:

In an electric propelling system of the character specified, a plow, a crosshead at the upper end of the plow, vertically disthe crossbead and adapted to engage the posed spaced members at tlie ends of the yoke and limit the diop of the plow. 10 crosshead, a yoke adapted `to receive the In testimony whereof Iallix my signature ci'osshead of the plow and provided with veiin presence oftw-o witnesses.

tical channels to receive the said spaced mem- WALTER B, UFFERT, bers, connecting pins between the yoke and fitneses: crosshead and readily detachable to admit LOUIS NEWMARK,

of the plow dropping, and a pin carried by SIGMUND SACHS. 

